To answer this question, you need to understand the PHP syntax and compare it to the given options.
Option A) xml - This option is incorrect because XML is a markup language used for structuring data, while PHP is a server-side scripting language.
Option B) xhtml - This option is incorrect because XHTML is a markup language that follows the XML syntax, while PHP is a server-side scripting language.
Option C) perl - This option is incorrect because Perl is a programming language with its own syntax, which is different from PHP.
Option D) javascript - This option is correct because JavaScript is also a scripting language that is used to add interactivity to web pages. PHP syntax is similar to JavaScript in terms of its use of variables, loops, conditional statements, and functions.
The correct answer is D. This option is correct because PHP syntax is most similar to JavaScript.